☰ Year plan · Science

Surviving and hiding

Week 1 · Axis 1 Systems, Unit 1 Living Systems: Get Started, Concept 1.1 Adaptation and Survival (A) · 3 lessons
1

Staying alive where we live

Discovery Education Science P4: Term 1, Unit 1, pp. 1–9
GoalName problems that make survival hard and say how living things and people cope with them.
New words
survive · to stay alivehabitat · the place where a living thing livesshelter · a safe place that protects from weather and danger
Explanation

Every living thing needs air, water, food and a safe place to live. The place where it lives is its habitat. Sometimes the habitat gives it problems: it is too hot, too cold, too dry, or there is too little food or shelter. Then it is harder to survive, which means to stay alive. Living things cope in different ways. A lizard rests in the shade at noon. A tree drops its leaves in a dry spell. People cope too: in a hot summer in Aswan we wear light cotton clothes, drink water and stay in the shade, and on a cold winter night we wear a coat. In this unit we will follow one story: bats. Bats are useful, shy animals that sleep upside down by day and hunt insects at night.

ProblemHow living things cope
Too hotrest in the shade or a burrow; drink water
Too coldthick fur, warm clothes, a warm den
Little watertravel to find water; save water
Little food or sheltersearch farther; use a cave, a burrow or a nest
Worked examples
hatwater
In the summer holiday in Aswan, Salma wears a light hat and a cotton shirt, drinks water often and plays in the shade. Her problem is heat, and she copes with clothes, water and shade.
A desert night near Siwa can be cold. A lizard slips under a rock, where it is a little warmer and safe from birds. Its problem is cold, and a rock is its shelter.
batnightinsect
A bat hangs in a dark cave all day, safe from the heat. At night it flies out and catches mosquitoes. Its cave is its shelter and its food is flying insects.
Class activity

Problem and answer. With a grown-up, choose three living things you can see near home: a street cat, a palm tree, a pigeon, a plant on the balcony. Copy the table in your notebook: Living thing, Problem, How it copes. Fill each row. Example: pigeon, hot noon, rests on a shady ledge.

Practice
1
It is a very hot noon in Luxor. Name two things a person can do to cope.
2
Which two help when the weather is cold? Say the letters.
ABC
3
A small stream dries up in summer. What problem do the animals there have?
4
Why is a cave a good shelter for a bat in the daytime?